Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (07): 145-150.doi: 10.13475/j.fzxb.20180503407

• Machinery & Accessories • Previous Articles     Next Articles

Double jacquard control system of warp knitting machine based on dual bus architecture

ZHANG Qi1,2, WEI Li1, LUO Cheng1, XIA Fenglin1, JIANG Gaoming1   

  1. 1. Engineering Research Center for Knitting Technology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
    2. Hubei Digital Textile Equipment Key Laboratory, Wuhan Textile University, Wuhan, Hubei 430077, China
  • Received:2018-05-15 Revised:2019-04-01 Online:2019-07-15 Published:2019-07-25

Abstract:

In order to solve the problem, too long static data loading time and too slow dynamic data refreshing leading to the inconvenience of pattern change and reduction of speed in the double jacquard warp knitting machine production due to the quick increase in the jacquard comb number and pattern information. A system based on two levels of databus architecture and modular of jacquard control unit of the double jacquard warp knitting jacquard control system was built. 100 Mbps Ethernet was used for big chunks of the pattern file loading, and the double thread scheduling to balance the contradiction between the high-speed flow and low speed storage for the large amount of data was designed. Double data buffer to exchange space for time was adopted to realize the isolation and concurrent execution between the bus data transmission and jacquard action. The conflict between high real-time capability demand and large amount of pattern data transmission effectively was alleviated. By the production verification on the RDJ6/2 double needle warp knitting machine, the designed double jacquard control system can meet the production speed of no lower than 450 r/min, and increases the production speed by nearly 30%. The 1 000-row double-jacquard pattern file loading time is about 10 s, meaning that the loading speed increases by 120 times.

Key words: warp knitting machine, double jacquard control system, production speed, loading speed, double data buffer

CLC Number: 

  • TS183.3

Fig.1

Arrangement of double jacquard bar in RDJ6/2"

Fig.2

Quartic trigger time series of double jacquard"

Fig.3

Load-thread and store-thread of pattern data"

Fig.4

Time series of dynamic data refreshing"

Tab.1

Optimization of double thread task cycle time"

测试
编号
重复加载
次数
线程1周期
N值/ms
线程2周期
M值/ms
平均加载
时间/s
a 10 2 2 8
b 10 5 2 20
c 10 2 5 10
d 10 5 5 22

Fig.5

Weave sample validation. (a) Drafted pattern; (b) Sample"

Tab.2

System performance comparison between two double jacquard control systems"

双贾卡
系统版本
总线
类型
总线速率 1 000横列花型
加载耗时
同款产品
最高生产速度/
(r·min-1)
V1.0 CAN 250 Kbps 20 min 350
V2.0 Ethernet 100 Mbps 10 s 450
[1] 何用辉, 黄耀志 . 基于单片机的压电式贾卡控制系统设计[J]. 工业控制计算机, 2007(12):75-76.
HE Yonghui, HUANG Yaozhi . Piezoelectric jacquard control system based on SIP[J]. Industral Control Computer, 2007(12):75-76.
[2] 赖森财, 任雯, 刘永桂 . 嵌入式电子贾卡控制系统设计[J]. 纺织学报, 2016,37(10):135-140.
LAI Sencai, REN Wen, LIU Yonggui . Design of embedded electronic jacquard control system[J]. Journal of Textile Research, 2016,37(10):135-140.
[3] 江建君, 蒋高明, 夏风林 . 经编压电贾卡系统工作原理探讨[J]. 针织工业, 2009(3):23-25.
JIANG Jianjun, JIANG Gaoming, XIA Fenglin . Working principle of the piezoelectric jacquard system[J]. Knitting Industries, 2009(3):23-25.
[4] 李永虎, 夏风林, 蒋高明 . 基于CAN总线的压电贾卡控制系统[J]. 纺织导报, 2010(7):86-88.
LI Yonghu, XIA Fenglin, JIANG Gaoming . Piezo jacquard control system based on CAN fieldbus[J]. China Textile Leader, 2010(7):86-88
[5] 赖森财, 任雯 . 经编机电子贾卡混合异构串行通信系统设计[J]. 工程设计学报, 2017,24(3):343-349,358.
LAI Sencai, REN Wen . The design of electronic jacquard hybrid isomerism serial communication system for warp knitting machine[J]. Chinese Journal of Engineering Design, 2017,24(3):343-349,358.
[6] 任雯, 赖森财 . 混合异构串行通信系统及动态分配设备地址方法:中国, 106506713A[P]. 2017-03-15.
REN Wen, LAI Sencai. Hybrid heterogeneous serial communication system and dynamic allocation device address method: China, 106506713A[P]. 2017-03-15.
[7] 钟君 . 经编贾卡提花鞋面织物的设计与仿真[D]. 无锡:江南大学, 2017: 6-9.
ZHONG Jun . Design and simulation of warp knitted jacquard shoe-upper fabric[D]. Wuxi:Jiangnan University, 2017: 6-9.
[8] 徐天雨 . 经编双针床双贾卡提花鞋面工艺研究[J]. 针织工业, 2015(8):1-4.
XU Tianyu . Knitting technology of warp-knitted double jacquard vamp fabrics on double bed warp knitting machine[J]. Knitting Industries, 2015(8):1-4.
[9] 周之丽 . 基于Nand Flash的大容量存储装置的设计与研究[D]. 太原:中北大学, 2015: 5-6.
ZHOU Zhili . Design and research of large capacity device based on Nand Flash[D]. Taiyuan:North University of China, 2015: 5-6.
[1] SUN Shuai, MIAO Xuhong, ZHANG Qi, WANG Jin. Yarn tension fluctuation on high-speed warp knitting machine [J]. Journal of Textile Research, 2020, 41(03): 51-55.
[2] WANG Jiandong, XIA Fenglin, LI Yalin, ZHAO Yuning. Optimal sliding mode control of electronic transverse servo for comb bar of warp knitting machine [J]. Journal of Textile Research, 2020, 41(02): 143-148.
[3] .

Influence of guide-bar swing on instantaneous yarn demand and yarn tension on double needle bar warp knitting machine [J]. Journal of Textile Research, 2019, 40(06): 106-110.

[4] . Simulation of electronic shogging system on warp knitting machine based on Simulink [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(02): 150-156.
[5] . Knitting motions for multi-bar warp knitting machine driven by E-cam [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(04): 127-133.
[6] . Design of embedded electronic jacquard control system [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(10): 135-140.
[7] . Analysis of shogging motion of guide bars on warp knitting machines [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(7): 121-125.
[8] . Research on dynamic variable structure control strategy for high-speed electronic shogging motion on warp knitting machine [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(3): 121-126.
[9] LIU Xin, HU Xu-Dong, CHEN Hong-Li. Dynamic analysis of warp knitting swing machine guide bar swing mechanism based on flexible multi-body system [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(6): 92-96.
[10] ZHENG Bao-Ping, JIANG Gao-Ming, XIA Feng-Lin, ZHANG Qi, QIN Wen. Design of electronic shogging system based on double PID control on warp knitting machine [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(5): 135-139.
[11] . Model-building for slot needles’six-bar linkage of high speed warp knitting machine based on UG [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(12): 127-133.
[12] . Present research situation and developing tendency of warp knitting equipment and technology [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(12): 140-144.
[13] . Dynamic analysis od shogging motion mechanism of guide bar on warp knitting machine [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(11): 121-126.
[14] ZHU Yuansheng. Effect of spunlace process on fibrillation of bamboo pulp fiber [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(2): 24-26.
[15] XIA Fenglin;GE Mingqiao;JIANG Gaoming. Optimizing design of shogging motion of the guide bar on high speed warp knitting machine [J]. JOURNAL OF TEXTILE RESEARCH, 2009, 30(05): 118-121.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!